EFFECT OF MAGNETIC FIELD ON THERMAL INSTABILITY OF A ROTATING RIVLIN-ERICKSEN VISCOELASTIC FLUID

Abstract

The thermal instability of a rotating Rivlin-Ericksen viscoelastic fluid in the presence of uniform vertical magnetic field is considered. For the case of stationary convection, Rivlin-Ericksen viscoelastic fluid behaves like a Newtonian fluid. It is found that rotation has a stabilizing effect, whereas the magnetic field has both stabilizing and destabilizing effects. Graphs have been plotted by giving numerical values to the parameters, to de-pict the stability characteristics. The rotation and magnetic field are found to introduce oscillatory modes in the system which were nonexistent in their absence. Copyright © 2006 Hindawi Publishing Corporation. All rights reserved. 1

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